What did Mary Know?

Imagine entering a quiet church, looking about to ensure no one else is there, then walking up the center aisle toward the altar, bowing, and sitting in one of the first couple of pews on the right.  You drop the kneeler and take on the position of a supplicant to God, beginning your prayers.  But unlike the many times you have done this in the past, you suddenly feel a wave of heat to your left.  Opening your eyes, you behold what has to be an angel, a dazzling bright young man, wings outstretched behind him, and his feet not exactly standing on the cold stones of the sanctuary.  How would you react?